Arm-abduction splint



'R. D. MADDOX.

ARM ABDUCTION SPLINT.

APPLICAHON FILED DEC-31.1918.

1,340,630. Patented May1 8, 1920.

5 v1 vc m toz ROBERT D." MADDOX, OF THE UNITED STATES ARMY.

ARM-ABDUCTION SPLINT.

Specification of Letters Patent.

Patented May 18', 1920.

Application filed December 31, 1918. Serial No. 269,100.

(FILED UNDER THE ACT OF MARCH 3, 1883, 22 STAT. I.., 625.)

T 0 all whom it may concern Be it known that I, ROBERT D. MAonoX, major,Med. Dept, U. S. Army, a citizen of the United States, stationed atVashington, D. G., have invented an Improvement in Arm-AbductionSplints, of which the following is a specification.

The invention described herein may be used by the Government, or any ofits officers or employees in prosecution of work for the Government, orby any other person in the United States, without payment of any royaltythereon.

This invention relates to surgical devices adapted to retain the arm ofthe patient in any desired position relatively to the body duringtreatment for fracture and other injuries especially of the upper arm orshoulder and has for one of its objects to simplify and improve theconstruction and increase the efiiciency and utility of devices of thischaracter.

Another object of the invention is to provide a simply constructeddevice of this character including a supporting frame, body engagingpads adjustably coupled to the frame, an upper arm engaging supportadjustably connected to the frame, and a fore arm supporting portionadjustably connected to the upper arm supporting portion.

With these and other objects in view the invention consists of certainnovel constructions and combinations of parts as will be hereinaftermore fully described and pointed out in the claims.

In the drawings illustrative of the preferred embodiment of theinvention Figure 1 is a perspective View, of the improved device.

Fig. 2 is a perspective view of one of the body engaging pad devices anda portion of the supporting frame illustrating the construction of thepad adjusting devices.

Fig. 3 is a plan view illustrating the connection between the frame andthe upper arm support.

F Fig. 4 is a side view of the parts shown in ig. 3. The supportingframe or standard includes a substantially vertical portion 10,

preferably oblong transversely, and with a circular upper portion 11.Slidably engaging the portion 10 of the frame are curved plates 1213 theplates having protecting lining pads 14-15 and likewise providedrespectively with holding devices such as straps 1617 and buckles 18-19whereby the plates and the supporting frame may be connected to the bodyof the patient.

Adjustably engaging over the rounded portion 11 of the frame is a sleeve20, split at 21 and provided with lateral lugs 22 to receive a bindingbolt 23. By this means the sleeve may be adjustably clamped upon thestandard both vertically and rotatably. At its upper end this sleeve 21is directed laterally and terminates in a radially notched disk 24. v

Another sleeve 25 is provided and formed with a radially notched disk 26coacting with the disk 24:, the two disks being united by a clamp bolt27 and wing nut 28. By this means the sleeves 20 and 25' may beadjustably coupled and held at any required angle, as hereafterexplained. V

The fore arm support includes a bar 29 having a rounded portion 30slidably and rotatably engaging in the sleeve '25, and clamped inposition through the coaction of a split 31, ears 32 and clamp bolt 33and wing nut 34, as shown.

The sleeves 20 and 25 are each formed with continuous bore so that therounded portions 11 and 30 of the supports 10 and 29 extend entirelytherethrough, to increase the extent of the adjustment.

The sleeves 20 and 25 are formed respec tively with lateral offsets andtogether with the disks 24 and 26 are duplicates so that they can beinterchangeably employed, and by forming them with the ofi'sets they canbe applied to the patient without inconvenience, or contacting with hisbody.

Adjustably engaging the bar- 29 is an upper arm supporting plate 35having a protecting pad 36.

The fore arm support includes a bar 37 having a forearm supporting plate38 provided with a protecting pad 39.

The confronting ends of the members 29 and 37 are provided with radiallytoothed disks 410- 11 united by a clamp bolt 42, to enable the parts tobe adjusted laterally and clamped in adjusted position.

The several plates 12-13-35 and 38 are secured adjustably to the framemembers by suitable clip devices, and as the clip devices are preciselyalike the description of one will suflice for all. Each clip devicecomprises a plate 43 bent to engage over the frame member and withdistended ends 44 to bear against the adjacent face of the member 121335or 38 as the case may be. One of the extensions is riveted or otherwisepermanently secured as shown at 45 to the adjacent plate while the otherextension is held in position by a wing nut and bolt 46. By this meansthe clip devices may be pinched against the frame and rigidly supportthe pad supporting plates in adjusted position by friction. The paddevices may thus be adjusted longitudinally of the frame and held inadjusted position by simply actuating the thumb nuts of the bolts 45.

The pad supports 35 and 38 are provided with straps or other meansrepresented at 47 for holding the pad portions to the arms, asindicated.

The improved device will thus be adapted to bodies and arms of varioussizes and lengths to enable the pads to be applied to different portionsof the arm, or to adapt the device to different sized patients.

Having thus described the invention what is desired to secure by LettersPatent is:

l. A device of the class described comprising a standard having meansfor supporting said device upon the body of a patient, said meansadjustable on the standard, a sleeve adjustable longitudinally of thestandard and independently of the body supporting means, a bar adaptedto support an arm of the patient, a sleeve adjustable l0ngitudinally ofthe bar, and means for swingingly uniting said sleeves.

2. A device of the class described comprising a standard, supportsadapted to bear upon the body of a patient, means for independentlyadjusting said supports upon the standard, a bar carrying supports forthe arm of the patient, connecting means between the standard and barformed of coacting members swingingly united, means for adjusting saidconnecting means longitudinally of said standard, and means foradjusting said bar longitudinally of said connecting means.

3. A device of the class described comprising a standard having meansfor supstandard, body encircling supports adjust-' able on saidstandard, an arm supporting bar, and articulated sleeves connecting thearm and the bar and adjustable thereon.

5. An arm abduction splint comprising a standard, body encirclingsupports adjustable on said standard, an arm supporting bar, articulatedsleeves connecting the standard and the bar, and means for clamping thesleeves at any angular degree of articulation.

ROBERT D. MADDOX.

